QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

EASTERLY INVESTMENT PARTNERS LLC's Holding History (CIK: 0001766150)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 616,681 Value ($000) $3,922 Avg Close $6.21 Range $4.50 - $7.88

Q3 2025

Shares 1,252,184 Value ($000) $6,799 Avg Close $5.32 Range $4.15 - $7.09

Q2 2025

Shares 1,083,635 Value ($000) $7,206 Avg Close $5.57 Range $4.05 - $7.03

Q1 2025

Shares 1,325,620 Value ($000) $8,630 Avg Close $8.34 Range $6.16 - $12.41

Q4 2024

Shares 954,995 Value ($000) $10,152 Avg Close $12.16 Range $9.87 - $15.67

Q3 2024

Shares 876,133 Value ($000) $11,355 Avg Close $13.36 Range $10.50 - $16.74

Q2 2024

Shares 692,746 Value ($000) $9,151 Avg Close $16.71 Range $11.83 - $23.86

Q1 2024

Shares 78,734 Value ($000) $1,855 Avg Close $24.77 Range $21.53 - $29.70

Q4 2023

Shares 12,092 Value ($000) $331 Avg Close $23.54 Range $19.35 - $28.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	616,681	$3,922	$6.21	$4.50 - $7.88
Q3 2025	1,252,184	$6,799	$5.32	$4.15 - $7.09
Q2 2025	1,083,635	$7,206	$5.57	$4.05 - $7.03
Q1 2025	1,325,620	$8,630	$8.34	$6.16 - $12.41
Q4 2024	954,995	$10,152	$12.16	$9.87 - $15.67
Q3 2024	876,133	$11,355	$13.36	$10.50 - $16.74
Q2 2024	692,746	$9,151	$16.71	$11.83 - $23.86
Q1 2024	78,734	$1,855	$24.77	$21.53 - $29.70
Q4 2023	12,092	$331	$23.54	$19.35 - $28.78